@phdthesis{76044,
  author = {R.J. Purser and M. de Pondeca and D. Parrish and D. Dévényi},
  title = {Covariance modelling in a grid-point analysis},
  year = {2007},
  journal = {ECMWF Workshop on Flow-dependent aspecyts of data assimilation, 11-13 June 2007},
  pages = {11-25},
  month = {2007},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  language = {eng},
}